code: расчет количества чисел в корзинах вынесен в функцию make_histogram()

main.cpp

@@ -46,13 +46,88 @@ find_minmax(vector<double>& numbers, double& min, double& max){
     }
 }
 
+
+vector<size_t> make_histogram(vector<double>& numbers, size_t bin_count){
+
+    vector<size_t> bins(bin_count);
+
+    double min, max;
+    find_minmax(numbers, min, max);
+
+    double bin_size = (max - min) / bin_count;
+
+    for (size_t i = 0; i < numbers.size(); i++) {
+        bool found = false; // òåêóùåå ñîñòîÿíèå òåêóùåãî ýëåìåíòà. Ýëåìåíò íå ðàñïðåäåëåí â êîðçèíó
+        for (size_t j = 0; (j < bin_count - 1) && !found; j++) { // áåð¸ì j-þ êîðçèíó
+            auto lo = min + j * bin_size; // îïðåäåëÿåì ãðàíèöû äàííîé êîðçèíû
+            auto hi = min + (j + 1) * bin_size;
+            if ((lo <= numbers[i]) && (numbers[i] < hi)) { // ïîäñòàâëÿåì ïîä ýòè ãðàíèöû i-é ýëåìåíò èç numbers
+                bins[j]++; // åñëè ýëåìåíò íàõîäèòñÿ â äàííîì äèàïàçîíå (ãðàíèöàõ), òî óâåëè÷èâàåì ñ÷åò÷èê j-îé êîðçèíû
+                found = true; // ïåðåêëþ÷àåì "ôëàæîê", ÷òîáû ïðåêðàòèòü ïåðåáîð êîðçèí è ïåðåéòè ê ñäåä. ýë. èç numbers
+            }                 // òî åñòü òåïåðü ýëåìåíò ðàñïðåäåëåí â êîðçèíó è íåò íóæäû ïåðåáèðàòü îñòàëüíûå êîðçèíû
+        }
+        if (!found) { // à åñëè æå âñ¸ òàêè ýë. íå ðàñïðåäåëåí, òî ýòî çíà÷èò, ÷òî îí ïîïàäàåò â ïîñëåäíèé äèàïàçîí
+            bins[bin_count - 1]++; // äîáàâëÿåì ýòîò ýë. â ïîñëåäíþþ êîðçèíó
+        }
+    }
+    return bins;
+}
+
+
+
 int
 main()
 {
-    Input in = input_data();
+    auto in = input_data();
+    auto bins = make_histogram(in.numbers, in.bin_count);
 
-    double min, max;
-    find_minmax(in.numbers, min, max);
+    size_t max_count = 0;
+    for (size_t x: bins) {
+        if (x > max_count) {
+                max_count = x;
+        }
+    }
+
+    if (max_count > MAX_ASTERISK) {
+        for (size_t count: bins) {
+            size_t height = MAX_ASTERISK * (static_cast<double>(count) / max_count);
+            if (count < 10) {
+                cout << "  " << count << "|";
+            }
+            else if (count >= 100) {
+                cout << count << "|";
+            }
+
+            else {
+                cout << " " << count << "|";
+            }
+
+            for (size_t i = 0; i < height; i++) {
+                cout << "*";
+            }
+            cout << "\n";
+        }
+    }
+
+    else {
+        for (size_t x: bins) {
+            if (x < 10) {
+                cout << "  " << x << "|";
+            }
+            else if (x >= 100) {
+                cout << x << "|";
+            }
+
+            else {
+                cout << " " << x << "|";
+            }
+
+            for (size_t i = 0; i < x; i++) {
+                cout << "*";
+            }
+            cout << "\n";
+        }
+    }
 
     return 0;
 }